Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. A method for processing a handover procedure by a user equipment (UE) of a mobile communication system, the method comprising: receiving, by the UE, a radio resource reconfiguration message from a base station; recognizing, by the UE, a handover type based on information included in the received radio resource reconfiguration message, wherein the information is mobility related information, wherein the mobility related information includes each of a first parameter indicating a target physical cell identity and a second parameter indicating a new user equipment (UE) identity, and wherein the first parameter is a physical cell identity (PCI) and the second parameter is a cell-radio network temporary identifier (C-RNTI); and performing, by the UE, a first or second handover procedure according to the recognized handover type, wherein the first or second handover procedure is performed based on whether a new C-RNTI or a new PCI exists in the radio resource reconfiguration message.
A mobile phone (UE) performs a handover procedure by first receiving a radio resource reconfiguration message from a base station. The phone then determines the type of handover based on mobility-related information within the message. This information includes the target cell's ID (PCI) and a new temporary ID for the phone (C-RNTI). The phone then executes either a first or second handover procedure based on whether the reconfiguration message contains a new C-RNTI or a new PCI, performing different steps depending on whether the handover is between base stations, or within a single base station.
2. The method of claim 1 , wherein the radio resource reconfiguration message is a handover command.
The mobile phone (UE) handover process, as described where it receives a radio resource reconfiguration message from a base station, determines the handover type based on target cell ID (PCI) and new phone ID (C-RNTI), and then performs the handover, uses a "handover command" message as the radio resource reconfiguration message. This handover command initiates the process of transferring the UE's connection from one cell to another.
3. The method of claim 1 , wherein the information further comprises a handover type indicator.
The mobile phone (UE) handover process, as described where it receives a radio resource reconfiguration message from a base station, determines the handover type based on target cell ID (PCI) and new phone ID (C-RNTI), and then performs the handover, determines the handover type based not only on the target cell ID and phone ID, but also on an explicit "handover type indicator" within the radio resource reconfiguration message. This indicator directly specifies the type of handover being performed.
4. The method of claim 1 , wherein the first handover procedure indicates a procedure for handover between different base stations.
The mobile phone (UE) handover process, as described where it receives a radio resource reconfiguration message from a base station, determines the handover type based on target cell ID (PCI) and new phone ID (C-RNTI), and then performs the handover, defines the "first handover procedure" as the steps required for a handover between different base stations. This handles the case where the mobile phone moves from the coverage area of one base station to another.
5. The method of claim 1 , wherein the second handover procedure indicates a procedure for handover in the same base station.
The mobile phone (UE) handover process, as described where it receives a radio resource reconfiguration message from a base station, determines the handover type based on target cell ID (PCI) and new phone ID (C-RNTI), and then performs the handover, defines the "second handover procedure" as the steps required for a handover within the same base station. This optimizes the process when the phone moves between cells controlled by the same base station.
6. The method of claim 1 , further comprising: if a transmission/reception acknowledgement information operation indicator is included in the information, starting data transmission after receiving transmission/reception acknowledgement information.
The mobile phone (UE) handover process, as described where it receives a radio resource reconfiguration message from a base station, determines the handover type based on target cell ID (PCI) and new phone ID (C-RNTI), and then performs the handover, adds a feature where, if the radio resource reconfiguration message includes a "transmission/reception acknowledgement information operation indicator", the mobile phone starts sending data only *after* it has received acknowledgement that the target base station has received the last transmitted packets from the old base station.
7. The method of claim 6 , wherein the transmission/reception acknowledgement information is a packet data convergence protocol (PDCP) status protocol data unit (PDU).
The mobile phone (UE) handover process, as described where, if a transmission/reception acknowledgement information operation indicator is included, the mobile phone starts sending data only after it has received acknowledgement, specifies that the acknowledgement information is a "Packet Data Convergence Protocol (PDCP) status protocol data unit (PDU)". This PDU confirms the successful transmission and reception of data packets between the phone and the network, ensuring no data loss during handover.
8. A mobile communication system, comprising: a base station configured to transmit a radio resource reconfiguration message; and a user equipment (UE) configured to receive the radio resource reconfiguration message, recognize a handover type based on information included in the received radio resource reconfiguration message, and perform a first or second handover procedure according to the recognized handover type, wherein the information is mobility related information, wherein the mobility related information includes each of a first parameter indicating a target physical cell identity and a second parameter indicating a new user equipment (UE) identity, wherein the first parameter is a physical cell identity (PCI) and the second parameter is a cell-radio network temporary identifier (C-RNTI), and wherein the UE performs the first or second handover procedure based on whether a new C-RNTI or a new PCI exists in the radio resource reconfiguration message.
A mobile communication system includes a base station that sends radio resource reconfiguration messages and a mobile phone (UE). The phone receives the message and determines the handover type based on mobility-related information: the target cell's ID (PCI) and a new temporary ID for the phone (C-RNTI). The phone then executes either a first or second handover procedure based on whether the reconfiguration message contains a new C-RNTI or a new PCI, performing different steps depending on whether the handover is between base stations, or within a single base station.
9. The system of claim 8 , wherein the radio resource reconfiguration message is a handover command.
The mobile communication system, comprised of a base station and user equipment that performs handovers based on reconfiguration messages containing cell and phone IDs, uses a "handover command" message as the radio resource reconfiguration message sent by the base station. This command initiates the process of transferring the UE's connection from one cell to another.
10. The system of claim 8 , wherein the information further comprises a handover type indicator.
The mobile communication system, comprised of a base station and user equipment that performs handovers based on reconfiguration messages containing cell and phone IDs, determines the handover type based not only on the target cell ID and phone ID, but also on an explicit "handover type indicator" within the radio resource reconfiguration message. This indicator directly specifies the type of handover being performed.
11. The system of claim 8 , wherein the first handover procedure indicates a procedure for handover between different base stations, and the second handover procedure indicates a procedure for handover within the same base station.
The mobile communication system, comprised of a base station and user equipment that performs handovers based on reconfiguration messages containing cell and phone IDs, defines the "first handover procedure" as the steps required for a handover between different base stations, and defines the "second handover procedure" as the steps required for a handover within the same base station.
12. The system of claim 8 , wherein if a transmission/reception acknowledgement information operation indicator is included in the information, the UE starts data transmission after receiving transmission/reception acknowledgement information.
The mobile communication system, comprised of a base station and user equipment that performs handovers based on reconfiguration messages containing cell and phone IDs, adds a feature where, if the radio resource reconfiguration message includes a "transmission/reception acknowledgement information operation indicator", the mobile phone starts sending data only *after* it has received acknowledgement that the target base station has received the last transmitted packets from the old base station.
13. The system of claim 12 , wherein the transmission/reception acknowledgement information comprises a packet data convergence protocol (PDCP) status protocol data unit (PDU).
The mobile communication system, where, if a transmission/reception acknowledgement information operation indicator is included, the mobile phone starts sending data only after it has received acknowledgement, specifies that the acknowledgement information is a "Packet Data Convergence Protocol (PDCP) status protocol data unit (PDU)". This PDU confirms the successful transmission and reception of data packets between the phone and the network, ensuring no data loss during handover.
14. A user equipment configured to operate in a mobile communication system, the user equipment comprising: a processor configured to receive a radio resource reconfiguration message from a base station, recognize a handover type based on information included in the received radio resource reconfiguration message, and perform a first or second handover procedure according to the recognized handover type, wherein the information is mobility related information, wherein the mobility related information includes each of a first parameter indicating a target physical cell identity and a second parameter indicating a new user equipment (UE) identity, wherein the first parameter is a physical cell identity (PCI) and the second parameter is a cell-radio network temporary identifier (C-RNTI), and wherein the first or second handover procedure is performed based on whether a new C-RNTI or a new PCI exists in the radio resource reconfiguration message.
A mobile phone (UE) contains a processor that handles handovers. The processor receives a radio resource reconfiguration message from a base station and determines the handover type based on mobility-related information: the target cell's ID (PCI) and a new temporary ID for the phone (C-RNTI). The processor then executes either a first or second handover procedure based on whether the reconfiguration message contains a new C-RNTI or a new PCI, performing different steps depending on whether the handover is between base stations, or within a single base station.
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September 16, 2014
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